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ultravioletrays
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The answer ULTRAVIOLETRAYS has 3 possible clue(s) in existing crosswords.
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The word ULTRAVIOLETRAYS is NOT valid in any word game. (Sorry, you cannot play ULTRAVIOLETRAYS in Scrabble, Words With Friends etc)
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Definitions of ultravioletrays in various dictionaries:
No definitions found
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Keep reading for additional results and analysis below.
Possible Crossword Clues |
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Tan producer |
Waves, being very often unseen |
Radiation units |
Last Seen in these Crosswords & Puzzles |
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Aug 21 2018 Universal |
Feb 17 2006 The Guardian - Cryptic crossword |
Aug 20 2004 Wall Street Journal |
Ultravioletrays might refer to |
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Ultraviolet (UV) designates a band of the electromagnetic spectrum with wavelength from 10 nm to 400 nm, shorter than that of visible light but longer than X-rays. UV radiation is present in sunlight, and contributes about 10% of the total light output of the Sun. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights. Although long-wavelength ultraviolet is not considered an ionizing radiation because its photons lack the energy to ionize atoms, it can cause chemical reactions and causes many substances to glow or fluoresce. Consequently, the chemical and biological effects of UV are greater than simple heating effects, and many practical applications of UV radiation derive from its interactions with organic molecules. * Suntan and sunburn are familiar effects of over-exposure of the skin to UV, along with higher risk of skin cancer. Living things on dry land would be severely damaged by ultraviolet radiation from the Sun if most of it were not filtered out by the Earth's atmosphere. More energetic, shorter-wavelength "extreme" UV below 121 nm ionizes air so strongly that it is absorbed before it reaches the ground. * Ultraviolet is also responsible for the formation of bone-strengthening vitamin D in most land vertebrates, including humans (specifically, UVB). The UV spectrum thus has effects both beneficial and harmful to human health. * Although the upper wavelength limit is conventionally taken as 400 nm, some humans can perceive light at slightly shorter wavelengths than this (see below). Beyond this, ultraviolet rays are invisible to all humans, although insects, birds, and some mammals can see near-UV (i.e. slightly lower wavelengths than humans can see). |